I'm sorry to sound harsh here, but just because you fancy her to bits doesn't mean she owes you anything in return. You need to stop acting like just because you like her she should automatically like you in return, and if she doesn't she should act like it. You've been harping on about her for months now on here, if anything was to happen between you two it would have by now, but she's not interested. It's gonna be hard but it's really time you moved on.